<template>
    <div class="icons">
        <swiper :options="swiperOption">
            <swiper-slide v-for="(page,index) of pages" :key="index">
                <div class="icon" v-for="item of page" :key="item.id">
                    <div class="icon-img">
                        <img class="icon-img-content" :src="item.imgUrl">
                    </div>
                    <p class="icon-desc">{{item.desc}}</p>
                </div>
            </swiper-slide>
        </swiper>
    </div>
</template>

<script>
    export default{
        name:"HomeIcons",
        props:{
            list:Array
        },
        data(){
            return {
                swiperOption:{
                    autoplay:false
                }
            }
        },
        computed:{
            pages(){
                const pages=[];
                this.list.forEach((item,index)=>{
                    const page=Math.floor(index/8);      // index等于3是第四个图标展示在第0页,index等于8是第九个图标展示在第一页
                    if(!pages[page]){
                        pages[page]=[];
                    }
                    pages[page].push(item);
                })
                return pages                           // pages是二维数组,[Array(8),Array(1)]
            }
        }
    }
</script>

<style lang="stylus" scoped>
    @import "~styles/varibles.styl"
    @import "~styles/mixins.styl"

    .icons>>>.swiper-container
        height:0
        padding-bottom:50%
        font-size:12px
    .icons
        margin-top:.1rem
        .icon
            position:relative
            overflow:hidden
            float:Left
            width:25%
            height:0
            padding-bottom:25%
            .icon-img
                position:absolute
                top:0
                left:0
                right:0
                bottom:.44rem
                box-sizing:border-box
                padding:.1rem
                .icon-img-content
                    display:block
                    margin:0 auto
                    height:100%
            .icon-desc
                position:absolute
                left:0
                right:0
                bottom:0
                height:.44rem
                line-height:.44rem
                text-align:center
                color:$darkTextColor
                ellipsis()

</style>